Here’s the comparison we’ve all been waiting for - Top Gear’s comparison between the E92 M3 with Competition Package and the Audi RS5. We won’t spoil the result for you, but the comparison starts 4:40 into this video.
Top Gear online reviews the BMW M3 GTS in the Austrian Alps on the infamous Grossglockner Pass. They come away calling the engine, gearbox, and chassis combination a religious experience. Final verdict: Ridiculous. Pointless. Perfect.